Hi,
There is no option to choose the display ordering between the tax and no-tax prices.
But you can do it with a view override.
By overriding the view "frontend | your_frontend_template | product | listing_price" you can change the way that the prices are displayed.
At this moment you can display the price without tax before and the price with tax after (in parentheses).
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.